Hypodermic syringe.



'G. R. SCHIMMEL.

y HYPODERMIG SYRINGE. APPLIOATION FILED ocT. 1o, 1913.

Patented June 30, 1914,u

lA PLANOGRAPM C0.. WA-IMINQNN. D. C.

MGE.

GUS'IAV R. SCI-IIMMEL, 0F DETROIT, MICHIGAN.

IIYPDERMIC SYRINGE.

ricami.

.whereby it is readily adjusted for manipulation particularly in combination with a goose neck holder er elbow for a needle so that the operators hand may grasp the instrument in proper relation to the plane of the needle.

The invention also includes means whereby the user may hold the instrument firmly while replacing a fitting or needle.

The invention consists in the matters hereinafter set forth and more particularly pointed out in the appended claims.

In the drawings, Figure l is a View, partially in elevation and partially in longitu-` dinal section, of a hypodermic syringe that embodies features of the invention; Fig. 2 is a view in section taken on or about line II-II of Fig. l; and Fig. 3 is a view in detail enlarged of the handle end of the barrel.

Referring to the drawings, a barrel l of suitable outer proportions and with cylin drical inner bore, has a nipple 2 on which a needle holder may be directly mounted or may be attached by means of a goose neck or elbow 3. A. piston 4; that plies in the bore of the barrel and extends through a suitable packing gland indicated at 5, has a handle 6 adapted to rest in the palm of the hand of the user whereby the latter may force the piston down by closing his hand, the fingers thereof' being gripped over a finger pull 7. The latter is swiveled on the barrel between a flange 8 thereof and a stop collar 9 which preferably engages a tapered, screw threaded portion 10 of the barrel. ylhe screw threads permit the collar to be turned into close adjustment with the finger pull. A stop l1 en the finger pull swings against a lug 12 on the collar 9 and prevents complete rotation of the finger pull on the Specicaton of Letters Patent.

Application filed October 10, 1913.

Patented June S, 1914i.

Serial No. 794,375.

bar rel. As a result of this construction, a syringe is obtained in which, when the needle holder is set at an angle by the use of a goose neck or elbow, the finger pull may be readily turned into proper position in relation to the plane of the needle with the handle of the piston in correct position relative thereto, so that the instrument is easily operated at any angle. Because of the stop that prevents complete rotation of the finger pull, the user may hold the barrel firmly from turning when unscrewing or adjusting the needle holder or elbow. It is to be understood that the engagement of the stop collar and finger pull may be made sufficiently close so that a little effort is required to swing the finger pull into the desired angular relation with the goose neck or needle and to hold the same frictionally in such adjusted position, or it may be slacked away from the finger pull to allow free rotation throughout almost the entire circle if the operator so wishes.

Obviously, changes in the details of construction may be made without departing from the spirit of my invention and I do not care to limit myself to any particular form or arrangement of parts.

What I claim isl. rll`he combination in a hypodermic syringe, of a barrel, an elbow ad'justably secured on the discharge end of the barrel, a finger pull rotatably mounted on the barrel, a stop collar longitudinally adjustable on the barrel adapted to limit the movement of the finger pull both longitudinally and angularly, a piston reciprocable in the barrel, and a handle on the piston.

2. The combination in a hypoderniic syringe, of a barrel, a nipple at the discharge end thereof, an elbow removably secured on the nipple, a flange near the other end of the barrel, a stop collar longitudinally adjustable on the barrel between the flange and the adjacent end, a linger pull rotatable on the barrel between the collar and flange, a piston reciprocatory in the barrel and a handle for the piston.

3. The combination in a hypodermic syringe, of a barrel, a discharge nipple at one end thereof, a needle holder elbow detachably secured on the nipple, a flange on the barrel near the other end thereof, a stop reoiprocable in the barrel, and a handle for collar engaging a tapered screw-threaded the piston. l0 portion of the barrel between the flange and 1n testimony Whereol:l I affixrmy signature adjacent end7 a finger pull rotatable on the in presence of two Witnesses.

5 barrel bet-Ween the flange and collar, a stop GUSTAV R. SCHIMMEL. on the linger pull, a proj eotion on the collar Vitnesses: cooperating With the stop to limit the rota- ANNA M. Donn, tion of the linger pull on the barrel, a piston C. R. STIOKNEY.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

